package com.jin.utils;

import java.util.Random;

/**
 * @author JJLiu
 * @create 2021-07-17 15:43
 **/
public class KeyUtil {

    /**
     * 生成唯一的主键
     * 格式：时间+随机数
     * @return
     */
    public static synchronized String getUniqueKey() {

        Random random = new Random();

        Integer number = random.nextInt(90000) + 10000;

        return System.currentTimeMillis() + String.valueOf(number);
    }

}
